Inspectorjoe Posted June 16, 2012 Report Share Posted June 16, 2012 Yesterday, I saw this device on a propane tank. It's a cellular dialer that monitors the level in the tank and alerts the supplier when it's getting low. It's the first time I've seen one. Are they common elsewhere? Click to Enlarge 48.04 KB Quote Link to comment Share on other sites More sharing options...
Erby Posted June 16, 2012 Report Share Posted June 16, 2012 Never seen one! Quote Link to comment Share on other sites More sharing options...
Inspectorjoe Posted June 16, 2012 Author Report Share Posted June 16, 2012 Never seen one! Up to this point, 60 others apparently haven't either! http://www.bergquistinc.com/pdf/2011/re ... llular.pdf Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted June 16, 2012 Report Share Posted June 16, 2012 Never seen one, but it's a great way to optimize delivery, especially as large propane users are often way out in the boonies. Quote Link to comment Share on other sites More sharing options...
John Kogel Posted June 19, 2012 Report Share Posted June 19, 2012 How does it work? How does it know the tank is half full, for example? Quote Link to comment Share on other sites More sharing options...
Inspectorjoe Posted June 19, 2012 Author Report Share Posted June 19, 2012 "Most add a signal sender to the standard float gauge, with hall effect and potentiometer being the two most common. Hall Effect - The force that a magnetic field exerts on an electric current. Where gauges containing magnets are used, hall-effect sensors allow reading of the gauge position without physical contact. Potentiometer - A type of resistor that gives an electrical resistance proportional to the measured value." It turns out that they've been around since at least 2005 and a lot of different companies make them: http://www.propanecouncil.org/uploadedF ... toring.pdf Quote Link to comment Share on other sites More sharing options...
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